In a move affecting the Direct-to-Device (D2D) market, major strategic shareholder Tower Corp (American Tower Corporation) has liquidated the vast majority of its position in AST SpaceMobile (NASDAQ: ASTS).
According to a Form 4 filing lodged with the SEC on December 15, 2025, the infrastructure giant sold approximately 2.28 million shares, generating gross proceeds of roughly $159 million. This transaction represents a reduction of Tower Corp’s stake of common stock, leaving them with reduced holdings just days before the scheduled launch of the BlueBird 6 satellite constellation.
Remaining Ownership & Stake
The filing clarifies that while Tower Corp divested much Class A common stock, it retains a significant “back-end” economic interest in the company:
- Residual Class A Shares: 211,379 shares remaining.
- LLC Units & Class B Shares: Tower Corp continues to hold 2,170,657 common units in AST & Science LLC, paired with an equal number of Class B shares of AST SpaceMobile.
- Redemption Rights: These LLC units and Class B shares are redeemable at any time for Class A shares on a 1-to-1 basis.
- Aggregate Beneficial Ownership: Following the sale, Tower Corp still beneficially owns 2,382,036 shares (representing approximately 0.84% of the total outstanding Class A stock).
Market Reaction & Transaction Details
The timing and volume of the sale triggered an immediate market reaction, with AST SpaceMobile stock closing down 11.6% following the disclosure.
- Seller: Tower Corp (American Tower)
- Volume Sold: ~2.28 Million Shares
- Total Value: ~$159 Million
- Timing: Immediate pre-launch (BlueBird 6)
Implications for the Sector:
- Profit Taking vs. Long-Term Value: The exit suggests that institutional partners may view current valuations—driven by retail enthusiasm and launch hype—as a peak capability for capitalization, rather than waiting for the service revenue phase.
- Capital Structure Concerns: While the technical integration remains sound, the removal of a “anchor tenant” investor creates volatility in the capital structure. It raises questions regarding whether other strategic partners (such as MNOs holding prepayment agreements) might seek similar exits if liquidity events present themselves.
While the BlueBird 6 launch remains technically pivotal for the network’s commercial rollout, the financial optics have shifted. The market must now weigh the technical success of the upcoming launch against the sudden loss of institutional “smart money” backing.
Insider Signals
While the major partners (AT&T, Vodafone) held firm, the move detected mixed signals from individual insiders:
- Selling: Routine executive disposals were noted for tax/vesting purposes by the CTO and CFO in early December (selling small tranches, <50k shares).
- Buying: Notably, Director Adriana Cisneros filed a Form 4 indicating a purchase of shares in late November 2025, suggesting continued internal confidence despite the Tower Corp exit.
